Brakes..
I've gotten a few emails about the brakes- an area I pretty much glossed over earlier..
If you've ever driven a stock N-Z600, you know the brakes are surprisingly poor for such a small. light car.. I think the problem lies with those 10" wheels and tiny, tiny brakes- not only that, but they're drum in the rear- yuk
When I decided to swap the Miata suspension in, I was quite worried that I wasn't able to fit the larger -1.8- bits under my 13" wheels.. I was also concerned about not using the vacuum assist from the Miata/MC donor... It ends up that I worried too much about nothing..
The 1.6 4-wheel disc setup is more than enough.. what's working in my favor for this build is just simple physics.. I took the brakes out of a 2500# car and put them in a 1400# car (albeit with no power assist).. In my case I also put an adjustable proportioning valve inline to the rear brakes, but truth is I didn't even need that- surprisingly the brakes are well balanced without needing to adjust them.. In hindsight, I'll bet I could have gotten away with even smaller (lighter) brakes to do the job- maybe one day I'll go back and swap in some lighter calipers/rotors..
Another lesson learned in this process: I made the mistake of installing a "line lock" in the rear brake circuit- it was my plan to have it act as my parking brake. Now I need to take it out- it simply never worked as I had hoped (it was hard to tell if it was positively 'locked' on- not a decisive click or snap open/shut as you would want).. anyway, it also bugged me that if I lost hydraulics that I had no mechanical backup (as pointed out by others in an earlier post)..
Anyway, I guess the takeaway is that going up a few inches in rim size to allow for the largest brakes I could fit proved to work very well.. It changed what used to be weak/sketchy brakes

, to brakes that are now quite good
-ccrunner